https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119785
--- Comment #2 from Sam James <sjames at gcc dot gnu.org> --- `~/gcc/configure --enable-host-shared --enable-languages=c,c++,jit --disable-multilib --host=sparc64-unknown-linux-gnu --build=sparc64-unknown-linux-gnu --enable-checking=yes,extra,rtl --with-build-config="bootstrap-ubsan"`